The photoacoustic blood model contains two or more kinds of light absorbing compounds in a blood model base material, in which the absorption coefficient ratios μ[λ2]/μ[λ1] at arbitrary two wavelengths λ1 and λ2 (λ1<λ2) of 600 nm or more and 1100 nm or less of the compounds are different from each other and the parameter S calculated from Equation (1) is 0 or more and 100 or less, in which HbO2[λ1] indicates an absorption coefficient of oxyhemoglobin at the wavelength λ1, HbO2[λ2] indicates an absorption coefficient of oxyhemoglobin at the wavelength λ2, Hb[λ1] indicates an absorption coefficient of deoxyhemoglobin at the wavelength λ1, Hb[λ2] indicates an absorption coefficient of deoxyhemoglobin at the wavelength λ2, and P′ indicates a ratio (Pλ2/Pλ1) of a photoacoustic signal intensity Pλ2 obtained by irradiation with light of the wavelength λ2 to a photoacoustic signal intensity Pλ1 obtained by irradiation with light of the wavelength λ1.
